Conductivity Due to Classical Phase Fluctuations in a Model For High-T_c Superconductors
Superconductivity
2009-10-31 v1
Abstract
We consider the real part of the conductivity, \sigma_1(\omega), arising from classical phase fluctuations in a model for high-T_c superconductors. We show that the frequency integral of that conductivity, \int_0^\infty \sigma_1 d\omega, is non-zero below the superconducting transition temperature , provided there is some quenched disorder in the system. Furthermore, for a fixed amount of quenched disorder, this integral at low temperatures is proportional to the zero-temperature superfluid density, in agreement with experiment. We calculate \sigma_1(\omega) explicitly for a model of overdamped phase fluctuations.
Keywords
Cite
@article{arxiv.cond-mat/0002346,
title = {Conductivity Due to Classical Phase Fluctuations in a Model For High-T_c Superconductors},
author = {S. Barabash and D. Stroud and I. -J. Hwang},
journal= {arXiv preprint arXiv:cond-mat/0002346},
year = {2009}
}
Comments
4pages, 2figures, submitted to Phys.Rev.B